ASoC: dt-bindings: adi,adau7002: Convert to DT schema

Convert the Analog Devices ADAU7002 Stereo PDM-to-I2S/TDM Converter
bindings to DT schema.  During the conversion, add properties already
used by DTS (sc7180-trogdor-coachz.dts) and Linux driver:
1. wakeup-delay-ms,
2. sound-dai-cells (via referencing dai-common.yaml).
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221209175947.335319-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/adi,adau7002.txt

-Analog Devices ADAU7002 Stereo PDM-to-I2S/TDM Converter
-
-Required properties:
-
- - compatible: Must be "adi,adau7002"
-
-Optional properties:
-
- - IOVDD-supply: Phandle and specifier for the power supply providing the IOVDD
-	supply as covered in Documentation/devicetree/bindings/regulator/regulator.txt
-
-	If this property is not present it is assumed that the supply pin is
-	hardwired to always on.
-
-Example:
-	adau7002: pdm-to-i2s {
-		compatible = "adi,adau7002";
-		IOVDD-supply = <&supply>;
-	};

Documentation/devicetree/bindings/sound/adi,adau7002.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/adi,adau7002.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADAU7002 Stereo PDM-to-I2S/TDM Converter
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: adi,adau7002
+
+  IOVDD-supply:
+    description:
+      IOVDD power supply, if skipped then it is assumed that the supply pin is
+      hardwired to always on.
+
+  wakeup-delay-ms:
+    description:
+      Delay after power up needed for device to settle.
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    audio-codec {
+        compatible = "adi,adau7002";
+        IOVDD-supply = <&pp1800_l15a>;
+        #sound-dai-cells = <0>;
+        wakeup-delay-ms = <80>;
+    };